CN103742334B - A kind of tubular turbine with the symmetrical wide movable guide vane in front and back - Google Patents
A kind of tubular turbine with the symmetrical wide movable guide vane in front and back Download PDFInfo
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- CN103742334B CN103742334B CN201310738483.0A CN201310738483A CN103742334B CN 103742334 B CN103742334 B CN 103742334B CN 201310738483 A CN201310738483 A CN 201310738483A CN 103742334 B CN103742334 B CN 103742334B
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- Prior art keywords
- guide vane
- movable guide
- wide movable
- rearmounted
- stator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/30—Energy from the sea, e.g. using wave energy or salinity gradient
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- Hydraulic Turbines (AREA)
- Other Liquid Machine Or Engine Such As Wave Power Use (AREA)
Abstract
The present invention relates to a kind of tubular turbine with the symmetrical wide movable guide vane in front and back proposed according to the present invention, it comprises forward water inlet flow channel, vertical shaft, supporting frame, two-way generating runner, oppositely water inlet flow channel, generator and speed increaser, characterized by further comprising preposition wide movable guide vane and rearmounted wide movable guide vane, this preposition wide movable guide vane is arranged between forward water inlet flow channel and two-way generating runner; This rearmounted wide movable guide vane is arranged between two-way generating runner and reverse water inlet flow channel; The longitudinal cross-section of described preposition wide movable guide vane and rearmounted wide movable guide vane is two ends streamline tapered wing shape, is arranged in two-way generating runner both sides symmetrically.The present invention can not only improve the forward generating efficiency of generator set, and can improve the reverse power generation efficiency of generator set, generator set generating total efficiency is improved further, is applicable to the tubular turbine of various low water head tidal power station.
Description
Technical field
The invention belongs to fluid machinery and hydroelectric project equipment technical field, particularly relate to a kind of tubular turbine with the symmetrical wide movable guide vane in front and back.
Background technique
Along with the large-scale development of China's hydroelectric resources, the middle and high head website belonging to economic indicator good is fewer and feweri, and develop low water head run-off river power station has particularly become the focus of research to the exploitation of tidal energy and entered the practicability stage thereupon.Known tubular turbine is because its inflow-rate of water turbine is large, rotating speed is high and efficiency is high, and efficient district is wide, compact structure and the advantage such as layout is simple and a kind of most economical and suitable water turbine pattern that becomes in low water head water energy development, how to utilize these advantages develop a kind of can be applied to tidal power station, low water head, large discharge two-way shaft tubular formula unit are significant efficiently.
The oblique water distributor of the many employings of current tubular turbine, movable guide vane is distributed on conical surface, is called cone guide vane.Because bulb-type tubular hydro set does not have spiral case, fixed guide vane is usually only played a supporting role and is not changed the circular rector of liquid stream, and the circular rector needed for runner provides by movable guide vane, and the performance of movable guide vane has direct impact to unit operation usefulness.Known technology shows, and existing bidirectional tidal generating power station adopts movable guide vane to be the structure of inlet guide vane mostly.As Chinese patent application 201210511304.5 discloses one " low water head shaft tubular bidirectional high-efficiency rotary wheel of water turbine and electromechanical assembly and supporting runner " thereof, this device comprises runner and electro-mechanical parts, and described runner section mainly comprises inlet segment, vertical shaft section, stator section, runner section and tail water pipeline section; Described electro-mechanical parts mainly comprises generator, speed increaser, movable guide vane, main shaft and water turbine.This device adopts the structure of preposition movable guide vane, although by regulating the fit angle of movable guide vane and blade, produce the hydraulic performance of good forward generating, but when reverse power generation, because there is no rearmounted movable guide vane, current do not form certain circular rector before entering runner, can not coordinate preferably with blade, cause reverse power generation hydraulic performance poor.
The paper that Yang Chunxia delivers " adopts two-way power generation performance research (BidirectionalPowerPerformanceofaTidalUnitwithUnilaterala ndDoubleGuideVanes) of the tide unit of one-sided-bilateral activity stator ", have studied adopt one-sided with the impact of bilateral activity stator two kinds of multi-form stators on tubular tide unit hydraulic performance, when adopting bilateral activity stator, its forward generating efficiency is 85.81%, reverse power generation efficiency is 80.66%, and the total efficiency of forward and reverse power generation is better than adopting one-sided movable guide vane form; Although adopt bilateral activity stator to improve generating efficiency, but also exist following not enough: when generating electricity forward or backwards simultaneously, current enter after outlet passage will produce whirlpool through water outlet stators, have both caused forward decrease of power generation, affect again reverse power generation efficiency and improve.
How to overcome the deficiencies in the prior art and become one of emphasis difficult problem urgently to be resolved hurrily in current fluid machinery and hydroelectric project equipment technical field.
Summary of the invention
The object of the invention is to provide a kind of tubular turbine with the symmetrical wide movable guide vane in front and back for overcoming the deficiencies in the prior art, the present invention can not only improve the forward generating efficiency of generator set, and the reverse power generation efficiency of generator set can be improved, generator set generating total efficiency is improved further, is applicable to the tubular turbine of various low water head tidal power station.
According to a kind of tubular turbine with the symmetrical wide movable guide vane in front and back that the present invention proposes, it comprises forward water inlet flow channel, vertical shaft, supporting frame, two-way generating runner, oppositely water inlet flow channel, generator and speed increaser, wherein: generator is connected by speed increaser with two-way generating runner; Generator and speed increaser are placed in vertical shaft; Characterized by further comprising preposition wide movable guide vane and rearmounted wide movable guide vane, this preposition wide movable guide vane is arranged between forward water inlet flow channel and two-way generating runner; This rearmounted wide movable guide vane is arranged between two-way generating runner and reverse water inlet flow channel; The longitudinal cross-section of described preposition wide movable guide vane and rearmounted wide movable guide vane is two ends streamline tapered wing shape, and be arranged in two-way generating runner both sides symmetrically, each stator two ends are spheric structure, and each stator inner ball surface and outer spherical surface distortion angle are 10 ° ~ 15 °; Angle theta between the stator rotary centerline that described preposition wide movable guide vane and rearmounted wide movable guide vane are arranged and unit rotary centerline is 80 °, the Sealing Surface that each stator is formed and unit rotary centerline are unsettled cross-distribution, and on the molded line of each stator intermediate cross-section, 20 somes coordinate in rectangular coordinate system is as following table 1:
Table 1
| Sequence number | x | y | Sequence number | x | y |
| 6001 | -145.99 | 0 | 6011 | 166.95 | 0 |
| 6002 | -128 | 3.15 | 6012 | 128 | -4.22 |
| 6003 | -96 | 7.83 | 6013 | 96 | -7.83 |
| 6004 | -64 | 10.8 | 6014 | 64 | -11.5 |
| 6005 | -32 | 13.62 | 6015 | 32 | -14.34 |
| 6006 | 0 | 15.25 | 6016 | 0 | -15.25 |
| 6007 | 32 | 14.34 | 6017 | -32 | -13.62 |
| 6008 | 64 | 11.5 | 6018 | -64 | -10.8 |
| 6009 | 96 | 7.83 | 6019 | -96 | -7.83 |
| 6010 | 128 | 4.22 | 6020 | -128 | -3.15 |
Two curvilinear equations after matching are respectively:
y=3E-11x
5+9E-09x
4-7E-07x
3-0.0008x
2+0.0067x+14.806；
y=-3E-11x
5-9E-09x
4+7E-07x
3+0.0008x
2-0.0067x-14.806。
Working principle of the present invention is: be arranged on by generator in the upstream vertical shaft of tubular turbine, and the section of vertical shaft is streamlined.When forward generates electricity, current enter forward water inlet flow channel, walk around vertical shaft, converge at the preposition wide movable guide vane place of tubular turbine and enter the runner envelope of tubular turbine, water impact runner blade, drive tubular turbine output shaft to rotate by runner blade switching energy, now rearmounted wide movable guide vane is full-gear, current, by rearmounted wide movable guide vane, flow out through reverse water inlet flow channel; When reverse power generation, current are flowed into by reverse water inlet flow channel, current enter the runner envelope of tubular turbine by rearmounted wide movable guide vane, water impact runner blade, drive tubular turbine output shaft to rotate by runner blade switching energy, now preposition wide movable guide vane is full-gear, and current are by preposition wide movable guide vane, walk around vertical shaft, flow out through forward water inlet flow channel.
The present invention compared with prior art its remarkable advantage is: one be the present invention when can either ensure that stator is opened stator rotates flexibly, inflow-rate of water turbine is large and water guide performance is good, can ensure again the Surface of action water shutoff excellent performance at stator two ends when stator is closed.Two is present invention employs wing fusiform wide stator, and water conservancy diversion better effects if, can not produce the phenomenon such as whirlpool, the separation of flow, thus reduces the hydraulic loss of stator section, improves water turbine generating efficiency; When forward generates electricity, by regulating preposition wide movable guide vane angle, making current before entering runner, form certain circular rector, keeping the hydraulic performance that good forward generates electricity, as when rated head is 2.5 meters, the present invention can make forward generating efficiency reach 89%; When reverse power generation, by regulating rearmounted wide movable guide vane, make current before entering runner, form certain circular rector, greatly improve reverse power generation efficiency, as when rated head is 2.5 meters, the present invention can make reverse power generation efficiency reach 82%.Three is that the present invention is when declared working condition, blade angle of the present invention is 70 °, blade angle adjustment range is-4 ° to+4 °, runner blade simultaneously in running and stator keep synergy, thus improve generating efficiency, particularly when head luffing and changes in flow rate large all steadily can generate electricity and keep higher generating efficiency.Four be the present invention when head is lower, as still can normal power generation when head is 2 meters, greatly breach the limiting value of prior art power generation conditions.The present invention is widely used in the tubular turbine of various low water head tidal power station.
Accompanying drawing explanation
Fig. 1 is the plan view of a kind of tubular turbine structure with the symmetrical wide movable guide vane in front and back that the present invention proposes.
Fig. 2 is the front view of a kind of tubular turbine structure with the symmetrical wide movable guide vane in front and back that the present invention proposes.
Fig. 3 is the layout schematic diagram of the symmetrical wide movable guide vane in front and back that the present invention proposes.
Fig. 4 is the symmetry wide movable guide vane intermediate cross-section airfoil structure schematic diagram that the present invention proposes.
Fig. 5 is the preposition wide movable guide vane form structure schematic diagram that the present invention proposes.
Fig. 6 is the rearmounted wide movable guide vane form structure schematic diagram that the present invention proposes.
Fig. 7 is the symmetry wide movable guide vane aperture regulation range schematic diagram that the present invention proposes.
Description of reference numerals: forward water inlet flow channel (1), vertical shaft (2), generator (3), speed increaser (4), supporting frame (5), preposition wide movable guide vane (6), two-way generating runner (7), rearmounted wide movable guide vane (8), reverse water inlet flow channel (9), stator inner ball surface (10), stator outer spherical surface (11), stator rotary centerline (12), stator full-gear (13), stator full off state (14), angle between stator rotary centerline (12) and unit rotary centerline (15) is θ.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in further detail.
Composition graphs 1, Fig. 2 and Fig. 4, a kind of tubular turbine with the symmetrical wide movable guide vane in front and back that the present invention proposes, it comprises forward water inlet flow channel (1), vertical shaft (2), supporting frame (5), two-way generating runner (7), oppositely water inlet flow channel (9), generator (3) and speed increaser (4), and described generator (3) is connected by speed increaser (4) with two-way generating runner (7); Generator (3) and speed increaser (4) are placed in vertical shaft (2); Wherein: also comprise preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8), this preposition wide movable guide vane (6) is arranged between forward water inlet flow channel (1) and two-way generating runner (7); This rearmounted wide movable guide vane (8) is arranged between two-way generating runner (7) and reverse water inlet flow channel (9); The longitudinal cross-section of described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) is two ends streamline tapered wing shape, be arranged in two-way generating runner (7) both sides symmetrically, each stator two ends are spheric structure, and each stator inner ball surface and outer spherical surface distortion angle are 10 ° ~ 15 °; Angle theta between the stator rotary centerline (12) that described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) are arranged and unit rotary centerline (15) is 80 °, the Sealing Surface that each stator is formed and unit rotary centerline (15) are in unsettled cross-distribution, on the molded line of each stator intermediate cross-section, as shown in Table 1 above, two curvilinear equations after matching are respectively 20 somes coordinate in rectangular coordinate system:
y=3E-11x
5+9E-09x
4-7E-07x
3-0.0008x
2+0.0067x+14.806；
y=-3E-11x
5-9E-09x
4+7E-07x
3+0.0008x
2-0.0067x-14.806。
The further preferred version of the present invention is: described preposition wide movable guide vane is equal with the two ends width of rearmounted wide movable guide vane; Preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) circumferentially distribute setting respectively symmetrically, and its quantity is respectively 10,12 or 14; Preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) control water flow and water (flow) direction; When forward generates electricity, rearmounted wide movable guide vane (8) angle is for keeping full-gear; During reverse power generation, preposition wide movable guide vane (6) angle for keep full-gear, preposition wide movable guide vane (6) or rearmounted wide movable guide vane (8) from stator full-gear (13) to the angle of stator full off state (14) be 88 °; The cross section of vertical shaft (2) is streamlined.
Composition graphs 3 and Fig. 4, the longitudinal cross-section of preposition wide movable guide vane (6) of the present invention and rearmounted wide movable guide vane (8) is two ends streamline tapered wing shape, is arranged in the both sides of two-way generating runner (7) symmetrically; Stator two ends are spheric structure, and inner ball surface (10) is connected with stator wheel hub, and outer spherical surface (11) is connected with regulating ring of wicket gate; Angle theta between the stator rotary centerline (12) that described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) are arranged and unit rotary centerline (15) is 80 °, and the Sealing Surface that stator is formed and unit rotary centerline (15) are in unsettled cross-distribution.
Composition graphs 5, Fig. 6 and Fig. 7, preposition wide movable guide vane (6) of the present invention and rearmounted wide movable guide vane (8) control water flow and water (flow) direction; When forward generates electricity, rearmounted wide movable guide vane (8) angle is for keeping full-gear; When reverse power generation, preposition wide movable guide vane (6) angle is for keeping full-gear, preposition wide movable guide vane (6) or rearmounted wide movable guide vane (8) from stator full-gear (13) to the angle of stator full off state (14) be 88 °, the inflow-rate of water turbine of its oblique water distributor is large, then energy conversion efficiency is high.
Specific embodiment of the invention process is: be arranged on by generator (3) in the vertical shaft (2) of the upstream of water turbine, the section of vertical shaft (2) is streamlined; When forward generates electricity, current enter forward water inlet flow channel (1), walk around vertical shaft (2), converge at preposition wide movable guide vane (6) place of tubular turbine and enter the runner envelope of tubular turbine, water impact two-way generating runner (7) blade, tubular turbine output shaft is driven to rotate by two-way generating runner (7) blade switching energy, now rearmounted wide movable guide vane (8) is full-gear, current, by rearmounted wide movable guide vane (8), flow out through reverse water inlet flow channel (9); When reverse power generation, current are flowed into by reverse water inlet flow channel (9), current enter the runner envelope of tubular turbine by rearmounted wide movable guide vane (8), water impact two-way generating runner (7) blade, rotated by two-way generating runner (7) blade switching energy band water turbine output shaft, now preposition wide movable guide vane (6) is full-gear, and current are by preposition movable guide vane (6), walk around vertical shaft (2), flow out through forward water inlet flow channel (1).
The explanation do not related in the specific embodiment of the present invention belongs to the known technology of related domain, can be implemented with reference to known technology.
The present invention, through validation trial, achieves satisfied effect.
Claims (5)
1. the tubular turbine with the symmetrical wide movable guide vane in front and back, it comprises forward water inlet flow channel (1), vertical shaft (2), supporting frame (5), two-way generating runner (7), oppositely water inlet flow channel (9), generator (3) and speed increaser (4), wherein: generator (3) is connected by speed increaser (4) with two-way generating runner (7); Generator (3) and speed increaser (4) are placed in vertical shaft (2); Characterized by further comprising preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8); This preposition wide movable guide vane (6) is arranged between forward water inlet flow channel (1) and two-way generating runner (7); This rearmounted wide movable guide vane (8) is arranged between two-way generating runner (7) and reverse water inlet flow channel (9); The longitudinal cross-section of described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) is two ends streamline tapered wing shape, be arranged in two-way generating runner (7) both sides symmetrically, each stator two ends are spheric structure, and each stator inner ball surface and outer spherical surface distortion angle are 10 ° ~ 15 °; Angle theta between the stator rotary centerline (12) that described preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) are arranged and unit rotary centerline (15) is 80 °, the Sealing Surface that each stator is formed and unit rotary centerline (15) are in unsettled cross-distribution, and on the molded line of each stator intermediate cross-section, 20 somes coordinate in rectangular coordinate system is as following table 1:
Table 1
Two curvilinear equations after matching are respectively:
y＝(3E-11)x
5+(9E-09)x
4-(7E-07)x
3-0.0008x
2+0.0067x+14.806；
y＝-(3E-11)x
5-(9E-09)x
4+(7E-07)x
3+0.0008x
2-0.0067x-14.806。
2. a kind of tubular turbine with the symmetrical wide movable guide vane in front and back according to claim 1, is characterized in that described preposition wide movable guide vane (6) is equal with the two ends width of rearmounted wide movable guide vane (8).
3. a kind of tubular turbine with the symmetrical wide movable guide vane in front and back according to claim 1, it is characterized in that preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) circumferentially distribute setting respectively symmetrically, its quantity is respectively 10,12 or 14.
4. a kind of tubular turbine with the symmetrical wide movable guide vane in front and back according to claim 1,2 or 3, is characterized in that preposition wide movable guide vane (6) and rearmounted wide movable guide vane (8) control water flow and water (flow) direction; When forward generates electricity, rearmounted wide movable guide vane (8) angle is for keeping full-gear; When reverse power generation, preposition wide movable guide vane (6) angle for keep full-gear, preposition wide movable guide vane (6) or rearmounted wide movable guide vane (8) from stator full-gear (13) to the angle of stator full off state (14) be 88 °.
5. a kind of tubular turbine with the symmetrical wide movable guide vane in front and back according to claim 1, is characterized in that the cross section of vertical shaft (2) is streamlined.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310738483.0A CN103742334B (en) | 2013-12-27 | 2013-12-27 | A kind of tubular turbine with the symmetrical wide movable guide vane in front and back |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310738483.0A CN103742334B (en) | 2013-12-27 | 2013-12-27 | A kind of tubular turbine with the symmetrical wide movable guide vane in front and back |
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| Publication Number | Publication Date |
|---|---|
| CN103742334A CN103742334A (en) | 2014-04-23 |
| CN103742334B true CN103742334B (en) | 2016-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310738483.0A Expired - Fee Related CN103742334B (en) | 2013-12-27 | 2013-12-27 | A kind of tubular turbine with the symmetrical wide movable guide vane in front and back |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108412668B (en) * | 2018-02-12 | 2020-03-27 | 长沙理工大学 | Double-duct water turbine power generation system |
| CN109778808B (en) | 2018-10-30 | 2021-03-19 | 杭州江河水电科技有限公司 | Duct type bidirectional tidal power station system |
| CN109798215B (en) * | 2019-03-27 | 2020-05-29 | 西北农林科技大学 | Novel ultra-low specific speed water pump turbine |
| CN112564598A (en) * | 2020-12-01 | 2021-03-26 | 西安交通大学 | Portable power generation box capable of utilizing water energy and solar energy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201221433Y (en) * | 2008-07-03 | 2009-04-15 | 水利部杭州机械设计研究所 | Bidirectional six-operating condition tide machine unit |
| CN101956641A (en) * | 2010-10-19 | 2011-01-26 | 哈尔滨工程大学 | Guiding device for horizontal-shaft tidal generation water turbine |
| CN102182622A (en) * | 2011-04-07 | 2011-09-14 | 清华大学 | Six-operating-condition bidirectional tide power generation water turbine |
| CN103233846A (en) * | 2012-12-04 | 2013-08-07 | 河海大学 | Low water head vertical shaft through-flow bi-directional efficient turbine runner as well as electromechanical device and mated flow passage thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE298042T1 (en) * | 2001-09-17 | 2005-07-15 | Clean Current Power Systems Inc | UNDERWATER MANUEL TURBINE |
| US20100260596A1 (en) * | 2009-04-13 | 2010-10-14 | Alexander Gokhman | Hydraulic bulb turbine with mixed-flow propeller runner |
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2013
- 2013-12-27 CN CN201310738483.0A patent/CN103742334B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201221433Y (en) * | 2008-07-03 | 2009-04-15 | 水利部杭州机械设计研究所 | Bidirectional six-operating condition tide machine unit |
| CN101956641A (en) * | 2010-10-19 | 2011-01-26 | 哈尔滨工程大学 | Guiding device for horizontal-shaft tidal generation water turbine |
| CN102182622A (en) * | 2011-04-07 | 2011-09-14 | 清华大学 | Six-operating-condition bidirectional tide power generation water turbine |
| CN103233846A (en) * | 2012-12-04 | 2013-08-07 | 河海大学 | Low water head vertical shaft through-flow bi-directional efficient turbine runner as well as electromechanical device and mated flow passage thereof |
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